Pump



1. A. LARSEN.

PUMP.

APPLICATION FILED MAR. 16. I916.

1,437,664. Patented Dec. 5, 1922.

Z W/ 6 f 05 mmmsses flu 674507" Jns AndreasLamew Patented, Dec. 5, 1922. l

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anns annnnnsrnnsnn, or cornnnnenn, DENMARK.

BUMPL- Application filed. March 16, 1916.. Serial No. 84,557.

To all whom it may concern."

Be it known that I, JnNs ANDREAS LAB: SEN, a subgect of the Kmgof Denmark, re-

siding at Copenhagen, Denmark, have vented certain improvements in Pumps, of which the following is a specification.

This invention relates to certain improve ments in pumps, and more particularly in pumps of that class or type which are especially designed and adapted foruse under certain special conditions as, for example in dairies and the like, where it is desirable so to regulate or control the operation of the pump as to vary its capacity in order to conform with and accommodate,variations occurring from time to time in the fluid supply, and the object ofthe invention is, in part, to provide a pump of thisgeneral chai acter having novel and improved controlling or regulating means, whereby such variation incapacity may be effected in a simple and convenient manner, and in part to provide for use insuch pumps controlling or regulating means'of the character described, rendering the same capable of operation in a substantially automatic manner, in order to dispense with such intimatecare or super vision as might otherwisebe requisite for avoiding the liability of derangement or breakdown of the pump itself, or of the apparatus in connection ,withwhichthe same is used. I l i The invention consists in certain novel features of the construction, and combina tions and arrangements of the several parts of the improved pump, whereby the same is rendered simpler, less expensive, and otherwise better adapted and more convenient and effective for use, all'as willbe hereinafter fully set forth;

The novel features of the invention be carefully defined in the claims; in order that my improvements may be the better understood, I will now proceed to describe the invention with reference to the accompanying drawings, wherein- Figure 1 is a fragmentary sectional elevation showing the driving; devices of a pump embodying my invention, and

Figure 2 is a sectional detail view taken in a plane at right angles to the plane of the section in Figure 1, showing features of construction to be hereinafter referred to.

As shown in these views,- my' improve will ments are embodied in a reciprocatorypump having a vertically arranged cylinder or barrel 7) supported upona frame or standard a,;the upper part of which isextended upwardly above saidbarrel, so as toafford a bearing for a horizontally directed driving shaft 0 actuated from anysuitable source of power and provided with a crank member d herein shown as made in the form of a flattened chambered disk, the front wall or side 8 of which is provided with an eccentrically positioned, annular bearing 3 wherein is mounted to turn an eccentric disk or member 5 held inplacein said bearing by means of an annular bearing member 2' applied to the outer surface of said wall 5- and engaging the outer surface of said eccentric disk or member '2' as clearly shown in Figure 1. v

The eccentric disk or. member 6 is provided with a bearing p positioned eccentrically with relation to the axis of rotation of said member in its bearings s, and adapted to receive a spherical bearing member 32 held in place in said bearing by means of an outer bearing ring or member 32 applied upon the outer surface of the ring or member i and provided with an axial bore or pas sage in which is mounted for endwise sliding movement a crank pin 6 carried by and projecting from the piston rod u of'the pump, which latter projects upwardly from the pump cylinder or barrel b and is guided at its upper endfor rectilinear reciprocatory movement in a slide hearing at the upper overhanging portion of the frame or standardc. I

The crank pin 6 is mountediupon thepiston rod 14 between collars c as clearly shown in Figure 1, so as to be adapted for a certain extent of turning 01' pivotal movement thereon in 'a plane at right angles to the direction ofmovement of the piston rod when reciprocated, and in the structure shown, this lateral pivotal or adjusting movement of the crank pin, in conjunction with its sliding movement in the axial bore of the spherical bearing member p, and the substantially ,universal movement of the latterin its bearing in the eccentric disk or member serves to accommodate the rotary movement of the crank disk or member d carrying said eccentric disk or member i to the rectilinear reciprocatory movement of the piston roda so that the latter is driven from the shaft 0 without recourse to the employment of a pitman or connecting rod.

In the embodiment of the invention herein shown, it will be evident that upon rotation of the eccentric disk or member .e' in its bearing 3 in the crank disk or member (2, a certain variation in the stroke imparted by the crank pin 6 to the piston rod u is attained by reason of the eccentricity of saidbearing s with regard to the axis of rotation of the crank disk or member d on which the bearing member p for said crank pin is eccentrically positioned, whereby it will be seen that whenever desired, by simple turning movement of the eccentric disk or member relatively to said crank disk or member (5, a rapid and effective variation of the stroke of the pump piston may be etlected to control and regulate the action of the pump in conformity with variations in the volume oil. fluid supplied thereto as the same may occur from time to time.

According to my invention means is pro vided whereby such control or regulation of the piston stroke may be effected mechanically and in the embodiment of the invention herein shown, such means includes devices for turning the disk or member '5 in its bearing in the crank disk or member (Z'i'or which purpose said eccentric disk or member is provided with a periphe al toothed gear surface it meshing, with the teeth of a miter pinion g carried upon stud or shaft f ournaled in the perimeter of the crank disk or member (1 the pinion 9 being within the" chamber of the crank disk upon the inner end of said shaft or stud f, the outer end of which carries a toothed gear wheel 0, whose teeth are adapted, upon successive rotations of the crank disk ormember (Z, for successive engagement w'th one or the other t the forks or bifurcations m of a pallet lever rfulcruined at 0 upon the upper overhanging part of the frame or standard and provided with a handle a by means of which it may be manipulated to cause one or the other oi its arms or pallets m, which are at opposite sides oi 'the gear wheel 71', to engage the teeth of the latter.

By this means it will be apparent that when said lev a" is rocked in one direction, the corresponding arm or pallet m thereo't will engage the teeth at one side of the wheel 7; at each successive rotation of the crank disk or member (7, so as to give rise to a gradual or intermittent rotatory movei'nent of the eccentric disk or member i in one direction in its bearing 8, so as to reduce the stroke of the pump piston 'radually'in conformity with a reduction in the supply fluid to the pump, or in case the supply be increaeed,a reverse movement of the lever '2' will cause its oppositely arranged arm or pallet m to engage the teeth at the opposits side of the gear wheel is, so that the direction of rotation of the eccentric disk or member 2' in its bearing sis reversed, and a gradual increase inthe stroke of the pump piston is eflected.

The arms or pallets m of the lever r are so arranged also that the'lever may be adjusted to a central or intermediate position, as illustrated in Figure 1, in which adjustment of the parts it will be apparent that said oppositely arranged arms or pallets an are both maintained out of engagement witli the teeth oi", the gear wheel is in order tha constant operation of the pump may be maintained indefinitely when desired. By adjustment of said lever r so that one or the other of its arms or pallets shall engage the teeth of the gear wheel, the capacity ot the pump may be increased or diminished to the point desired, and when the desired capacity is attained, the adjustment of said lever to its central or inactive position will enable the pump to be operated at constant capacity until such time further regula tion may be necessary.

It will be apparent that the structure and arrangement of the controlling means as herein set forth is such as will assure substantially automatic operation thereof in eli'ecting desired regulation or variation in the operation or the pump, since the eccentric disk. or member i being; adapted for complete rotation in'its bearing, is adapted forrecurrent operation under the influence of the lever 9, wheel 70, and relatel nearing, so that in case the pallets or a ol' said lever 7', through oversight of the attendant. be left remaining in position for engagement with the-teeth of wheel ,lr, no damage or derangement of the parts will result. the only effect being alternating: gradual increases and diminutions in the capacity of the pump from its maximum capacity to its minimum. and vice versa. or in other words, operation of the pump at half capacity.

.laving thus described my invention, what I claim and desire to secure by Letters Pat ent is- 1. A. device of the character described ha lIlfZ a rotatable supporting member, an eccentric member adjustably sup 'io'i'ted there-- on, a crank pin having: eccentric reletion t said eccentric member and adapted, during: adjustment of the same. to be moved nearer or farther from the rotative axis of: id

adjust-- nearest to be moved recurrently nearer to and farther from the rotative axis of said supporting member, and means including toothed gearing actuated from rotation of the supporting member, for rotating said eccentric member to vary the adjustment of the crank pin.

3. A device of the character described having a rotatable supporting member, an cecentric member rotatively mounted upon the supporting member, a crank pin having eccentric relation to the eccentric member, and means intermittently actuated from rotation of the supporting member for rotating said eccentric member relatively to the supporting member, operable to move the crank pin recurrently nearer to and farther from the rotative axis of said supporting member.

a. A device of the character described having a rotatable supporting member, an eccentric member rotatably supported thereon, a crank pin having eccentric relation to said eccentric member, and means actuated from rotation of the supporting member, to communicate rotative movement to said eccentric member and operable automatically to move said crank pin first farther from and ite-rwards nearer to the rotative axis of said supporting member.

5. A device of the character described having a rotatable supporting member, an eccentric member rotatably supported thereon, a crank pin having eccentric relation to said eccentric member, and reversible means operable, from rotation of the supporting member, to communicate reverse rotative movements to said eccentric member to move said crank pin nearer to or farther from the rotative axis of the supporting member.

6. A device of the character described having a rotatable supporting member, an eccentric member rotatably supported thereon, a crank pin having eccentric relation to said eccentric member adapted, during rotation of the same to be moved nearer to or the Wrist pin with respect to the rotative j axis of the rotatable member.

8. A device of the character described having a rotatable member, areciprocatory member, means for driving one of said members from the other including a Wrist pin, and means for adjusting the Wrist pin eccentrically With respect to the rotative axis of the rotatable member including a part mounted to turn upon the rotatable mcmher, and gearing for driving said part intermittently.

9. A device of the character described having a rotatable member, a reciprocatory member, means for driving one of said members from the other including a Wrist pin, and means for adjusting the Wrist pin eccentrically with respect to the rotative axis of the rotatable member, including gearing carried by the rotatable member, and a member intermittently engageable with said gearing during movement of the rotatable member. a

10. A device of the character described having a rotatable member, a reciprocatory member, means for driving one of said memhere from the other including a wrist pin, and means for adjusting the Wrist pin eccentrically with respect to the rotative axis of the rotatable member, including a gear cau'ied upon the rotatable member, and a member adapted for interchangeable engagement at opposite sides of the gear to turn the same in opposite direction.

11. A device of the character described having a rotatable member, a reciprocatory member, means for driving one or" said members from the other including a Wrist pin,

and means for adjusting the Wrist pin with respect to the rotative axis of said rotatable member including a gear Wheelcarried upon one of the members, and a member adapted for interchangeable engagement at opposite .ides of said gear Wheel to .turn the same in Signed by me at Copenhagen, Denmark, the same in opposite directions. this fourteenth day of February, 1916.

JENS ANDREAS LARSEN.

Witnesses:

CHARLES Home, I. KNUDsEN. 

